Table
T3. Results of point counts on volcanic rock thin sections, Site 1191.
Core,
section,
interval (cm)Unit
Rock
type
Number
of points
Groundmass
(%)
Vesicles
(%)Phenocrysts
(%)
193-1191A-
1R-1
(Piece 2, 5-7)
1
Rhyodacite
650
91.3
8.6
0.0
0.0
0.0
2R-1
(Piece 7, 42-46)
1
Rhyodacite
750
86.2
13.1
0.2
0.1
0.1
2R-2
(Piece 16, 103-106)
1
Rhyodacite
700
90.6
9.3
0.0
0.0
0.0
3R-1
(Piece 1, 4-7)
1
Rhyodacite
750
87.7
12.0
0.2
0.0
0.0
3R-1
(Piece 4, 18-21)
1
Rhyodacite
750
91.7
8.1
0.0
0.1
0.0
3R-1
(Piece 9, 51-54)
1
Rhyodacite
750
85.3
14.6
0.0
0.0
0.0
Note: Point counts were measured using a rectangular grid with a = 0.667 mm and b = 0.8 mm.